Filter



Oct. 12 1926.

...l illl Oct. l2 1926.

D. E. ERICKSON FILTER Filed July 5, @i

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l l I l Il III||||J D. E. yERICKSON FILTER Filed July 5, 1912s 4A sheets-sheet 5 Oct. 12 1926. v D.v E. ERICKSON FILTER M11/wmf @Eff/drown Filed July 5, 1923 l4. Sheets-Sheet 4 ll'atented (let. l2, 1926.

naaien s'rares 1,003,004 PATENT OFFICE, Y

DANIEL EMIL ERICKSON, F LONDON, ENGLAND, 'ASSIGINOR` TO QOIwiPORATION, OF NEW YORK, N. vY. l

SHIPYARDS FILTER.

Application filed uly 5, 1923, Serial lio. 649,663, and in Great Britain April 27, 1923.

This invention relates to filters and has particular reference to duplex filters suchf y .invention is to provide a iilterthat is foolprooi, simplel in operation and construction, and relatively inexpensive.

'lilith the above object in view and such others as are incidental thereto or lhereinafter appear the invention in one ofits aspects may be regarded as 'comprising a. plurality of cylinders each having an inlet port and an outlet port, a strainer in each cylinder two conical plug valves eaclrresiliently held in its seating and a single operat-ing lever whereby a single inanipulation of the valves changes the travel oi the liquid to be hltered from passing through one of the cylindersto passing through .the other cylinder. The conical plugvalves may be arranged coaXially and mutually converging and are also preferably arranged 'to be partially hydraulically balance-d. l

In the simplest form of the invention the passages to and from two cylinders are controlled by two simultaneously operated conical plug cocks or valves so that .when one is rendering acylinder andstrainer idle the other cylinder and strainer are simultaneously being rendered active. These cocks or valves are preferably geared or otherwise positively connected to a single gear wheel or other element on the spindle ot the lever arm control bar which is ar ranged to normally occupy one or other of.

two extreme positions.

In one convenient construction and ar- 'angement the conical valves are hollow conical double-ported plug valves co-airially arranged with their smaller ends towards one another. The juxtaposed smaller ends of these plug cocks are closed and may be tor-ined as bevel gear wheels meshing with a single intermediate bevel wheel mounted on a manually controlled spihidle vBy permitting the oil or other liquid under control to act upon both sides `or the plug cocks the liquidpressure upon them is partly balanced and `no ditlicuity is ex- `perienced in `making them turn in their conical 'seatings In order to keep the plug COcliswell seated they 4may advantageously be drawn towards one another by a spring controlled'bolt and nut or equivalent yielding connection;

In order that the invention Inay be clearly understood and readily carried into effect the same will nowrbe described 'more fully with reference to the accompanying draw ings which illustrate one practical 4embodment. In these drawingsl Figure 1 is aside elevation of the iniproved filter.A

Figure 2 is a sectional elevation of the plug cocks and their 'operating gear removed froni theirv normal position in 'the iilter.

Figure 3 is a half elevation, half sectional elevation and Figure liis aplan'vof the same filter.

Figure 5 is a sectionalelevation on the line 5-5 of Figure Sand Figure 51"' i'sfa; sectional plan on the line GTG of Figure Figures 7 to 10 are respectively afpian,

a sectional elevation, an 'elevation ``and a horizontal section (on anfenlarge'd scale) of the sleeve in which the spindle of the operatinghandle works. F Figure ll is a cross section of lthe vinlet plug cock showing the ports therein.

The filter as shown comprises the two cylinders A and B arranged side by side as a single casting. yThe cylinder 1A liefs an inlet port A1 near the top and anout-l'et port A2 angularly displaced axially of the cylinder with reference to'port Al'near the bottom. Similarly the cylinder'B has inlet port Binear the top'arid amontlet port B2 angularly 4displaced axially of the cylinder with reference to port B1` near the bottom. The cylinders have internal '1shop-.L ders A3 B3 respectively to serve asseatings for the open ends of the lilters `X y'which extend downwardly and form `an annular space or chamber betweeny them and 'the internal walls `ot the cylindcrsl'" H Set in horizontal alignment in a Vvertical plane at right angles to the vertical plane common to the two cylinders are two hollow plugcoclis C andy fitting' in vapproprjate conical seatings in the ,casting.v The `plug cocks C and D each have two ports @11C2 and D1 D2 respectively capable of registering witheither of two passages E G Aand "F H leading from ports E11@1 and F1 *HQ reof the ports vnaiiiely(l A1 B2 Aspectively in the cylinders. "The arrange- ,spectively in their conical seatings toV two ment ot these ports and passages is such that when filtering through the cylinder it. the oil or other liquid to be iiltered which enters the lilter through pipe T passes from the interior et the inlet plug cock C through the port C1 therein and along the passage to the inlet port A? ot the cylinder A. litter passage through the cylinder by Way of the strainer therein the oil or other fluid passes through the outlet port A2 ot cylinder li and along the passage F and through the port D1 ot' the outlet plug cock l) to the interior of this plug cool: whence it leaves the filter by the pipe U. liteanivhile the other ports and passages and the cylinder B are idle since the ports C2 G1 and D: lll are not in coincidence and hence no liquid can pass therethrough into cylinder B and the strainer in this cylinder can it desired be removed and cleaned.

ln the alternative position of the plug' cocls that is to say when the plug` cocks C and D have been operated by the mechanism to be hereinafter described so as to bring` the ports C2 G1 and D2 H1 into coincidence the liquid passes 'from pipe T through the port G2 et cool; C, port G1 alongpassage G to port B1 in cylinder B and returns 'troni this cylinder by Way ot port B27 passage l-l, port ll. and port D2 ot the plug` coclr .D to the outlet pipe U. ln this position ot the plug cools the ports G1 El and D1 F1 are not in coincidence and the strainer in cylinder A. can be removed and cleaned.

For operating` the device the .smaller ends et the plug` cocls are formed as bevel gear Wheels C3 D.4 which mesh with a third bevel gear wheel l in a gear chamber J between the plug cock seatingjs. The bevel Wheel l is secured to a spindle K which passes through a guide or sleeve L and terminates in a square end to receive a readily accessibley control bar or operating;- handle M (Fig. 7). rlhis handle is movable angularly Within limits determined by pillars or guard pieces ll on the cap or cover plate O on the top of the sleeve L. lt will ot course be understoo-d that when the handle is shifted angularly between the guard pieces N, the gear Wheel l through gears C3 D.i turns the two cocks C and D equally in opposite di rections and changes over the duty of hltering from one cylinder to the other as above described.

The top ot each cylinder is closed by a cover plate hel-d doivn by suitable means such as cross bars and a clamping scren7 l?.

The location of the ports and the range of movement of the handle M are such that the tloiv ot oil can never be entirely blocked but is divided betvfeen the tivo cylinders 'lier intermediate positions ot the handle. lin either oit its normal positions to the extreme right or cxtreme lett the one or the other cylinder is idle.

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ln order to leep the plug cool-:s C and ll Well. seated and on the other hand in order to allou' them to recede or yield slie'litly when operated by the gear Wheel i and thereby enable 'the movement ot the ha dle lil to lie readily started without a great initial if tort. the said plug4 coclrs are yieldingly secured together by a sprinl controlled bolt Q.

The holes in the closed ends oit the plug; cocks through which the bolt Q passes are preferably large enough to enable the oil or other liquid to pass through and till the rear chamber il .so that its pressure acts upoii the smaller ends ot the plug coclzs a d thereby relieves the counter oil pressure and par- 17* tially balances the cocks so that they do not bind teo tirmly in their seatings.

f he outstanding advantages ot niv iniproved filter are the simplicity oi manet-aetuje9 the simultaneous operation ot the fi valves and the 'foolproof nature of their actuation and control .so that no dam the tilts? .y pumps or other s" "l ment can result 'from carele. ,i

lla-that l claim and desire to secur ters Patent is l. li or liquids conn,irising` a plu' rality of cylinders cach havi1 an inlet port and an outlet port7 a strainer in each cv der, tivo conical plus; valves each resiliei held in its seating;` and a single operating' lever whereby a single manipulation ot the valve mechanism changes over the tloiv olf liquid 'trom passing` through one cylinder to passing through another.

2. A lilter tor liquids comprising` a plurality ot cylinders each having* an inlet port and an outlet port, a strainer in each cylinder7 tivo mutually ooavertginQ)v coaxial cenical plug` valves each resiliently held in its seating and a sin p le operatin lever whereby a single manipulation ot the valve mecha? nism changes over the lovr oli liquid from passing through one cylinder to passing through another. i'

3. A tilter for liquids comprisinaa plurality oif' cylinders each having an inlet port and an outlet port7 a strainer in each cyiinder, tivo n'uitually cenvergureco-ariial conical plug, valves resiliently connected together and a single operating` lever whereby a single manipulation of the valve mechanism changes over the duty ot .filtering 'from one cylinder to another.

il. i lilter comprising a plurality ot cylinders each having: an inlet port and an outlet port, a strainer in each cylinder, tivo unitnally convergine co-airial conical plug; valves a spring controlled connecting nut and bolt resiliently connecting;- together said valves and a single valve operating lever' vvluzreby` single manipulation oit the valve mechanism changes over the duty ot filtering` from one cylinder to another.

5. A :tilter for liquids comprising tn'o llfi cylinders each having an inlet port and an outlet port, a strainer in each cylinder', two conical plug valves resiliently held in their' respective seatings and controlling the flow of liquid to and from the cylinders alternatively, a control bar, and gearing operatively connecting both valves and the control bar.

6. A filter for liquids comprising two cylinders each having an inlet port and an outlet port, a strainer in each cylinder, two double-ported hollow rconical plug` valves controlling the flow of liquid to and from the cylinders by way o't said ports, gear teeth on said plug valves, a gear wheel intermeshing with said gear teeth, and means for angularly adjusting said gear wheel.

7. A lilter for liquids comprising a plurality oi' cylinders each having an inlet port and an outlet port, a strainer in each cylinder, two partially hydraulically balanced conical plug valves means tor resiliently seating said valves and a single operating handle whereby a single manipulation of the valve mechanism chan ges over the duty of filtering from one cylinder to another.

8. A duplex lilter for liquids, comprising two cylinders side by side two co-axial and mutually converging conical valve seatings setin a plane at right angles to that containing the cylinder axes, passages between ports in the cylinders and ports in the valve seatings, double-ported hollow conical plug valves in said seatings controllingthe flow of liquid to and from the cylinders alternatively, means resiliently drawing said valves towards each other he fluid pressure on said valves being partially balanced by acting on both sides thereof, a valve control bar, and means operatively connecting said valves with said control bar.

V9. A duplex filter for liquids comprising two cylinders side by side, two co-aXial and mutually converging conical valve seat-ings set in a plane at right angles to that containing the cylinder axes, passages between ports in the cylind rs and ports in the valve seatings, double-ported hollow conical plug valves in said seatings controlling the flow of liquid to and from the cylinders alternatively, mea-ns resiliently drawing said valves towards each other the fluid pressure on said valves being partially balanced by acting on both sides thereof, gearing inter-V connecting said valves to rotate them simul taneously, a spindle cqnnected to one element of said gearing, and a. control bar for operating said spindle. v

DANIEL EMIL ERICKSON. 

